<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <div id="app">hello word </div>
</body>

</html>
<script src="dist/vue.js"></script>
<script>
  let vm = new Vue({
    el: "#app",
    data() {
      return {
        msg: '我是msg',
        a: {
          b: 20
        },
        list: [1, 2, 3],
        arr: [{
          a: 1
        }]
      }
    },
    props: {

    },
    watch: {

    },
    computed: {

    }
  })
  console.log(vm, 'vm');
</script>